package com.zhouidea.www.methods.Recursive;

public class Demo1 {
    public static void main(String[] args) {
        int f = f(4);
        System.out.println(f);
    }

    //5!   5*4*3*2*1
    public static int f(int n){
        if(n==1){
            return 1;
        }else{
            return  n*f(n-1);
        }
    }
}
